CN116446933A - Grouting anchor rod for tunnel - Google Patents
Grouting anchor rod for tunnel Download PDFInfo
- Publication number
- CN116446933A CN116446933A CN202310713073.4A CN202310713073A CN116446933A CN 116446933 A CN116446933 A CN 116446933A CN 202310713073 A CN202310713073 A CN 202310713073A CN 116446933 A CN116446933 A CN 116446933A
- Authority
- CN
- China
- Prior art keywords
- self
- expanding
- anchor
- pipe
- anchor rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000007246 mechanism Effects 0.000 claims abstract description 59
- 230000000452 restraining effect Effects 0.000 claims description 22
- 230000000694 effects Effects 0.000 abstract description 4
- 238000007569 slipcasting Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 3
- 239000011435 rock Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention provides a grouting anchor rod for a tunnel, which comprises the following components: the anchor rod head is of a conical structure, and an outer tube is correspondingly connected to the larger section of the anchor rod head; the anchor pipe extends into the outer pipe along the axial direction and is correspondingly connected to the anchor rod head; the limiting pipe is correspondingly sleeved on the outer wall of the anchor pipe and is assembled with the anchor pipe through threads; the self-expanding mechanism comprises a first self-expanding piece and a second self-expanding piece, the self-expanding mechanism is extruded to one end of the anchor rod head in response to the limiting pipe, and one end, connected with the first self-expanding piece and the second self-expanding piece, of the self-expanding mechanism extends outwards or retracts to form a strip-shaped hole. Can open under the drive of gag lever post through from expanding the mechanism to can conflict the inner wall at the anchor eye, prevent that the stock from taking place the phenomenon that drops before the slip casting, with this slip casting effect of having guaranteed, avoid repeatedly installing the problem that the efficiency of construction is low that the stock caused.
Description
Technical Field
The invention belongs to the technical field of tunnel anchor bolt support, and particularly relates to a grouting anchor bolt for a tunnel.
Background
The initial anchor bolt support of the mountain tunnel is a lining core of a new Olympic tunnel, and the hollow grouting anchor bolt technology can keep the integrity and stability of surrounding rock to the maximum extent, can effectively control the deformation, displacement and crack development of rock mass, and fully plays the supporting role of the surrounding rock. Especially, when the karst landform is processed and the rock mass is broken, the stabilizing effect is obvious. However, the conventional hollow radial anchor rod is not easy to hang, and particularly when a tunnel vault is constructed, the hollow anchor rod inserted into the anchor rod hole often falls off or shifts before grouting or in the grouting process, so that the grouting effect of the hollow anchor rod on reinforcing a rock body is seriously affected, and the construction efficiency is greatly reduced.
Accordingly, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides a grouting anchor rod for a tunnel.
In order to achieve the above object, the present invention provides the following technical solutions:
a grouting anchor for a tunnel, comprising:
the anchor rod head is of a conical structure, and an outer tube is correspondingly connected to the larger section of the anchor rod head;
the anchor pipe extends into the outer pipe along the axial direction and is correspondingly connected to the anchor rod head;
the limiting pipe is correspondingly sleeved on the outer wall of the anchor pipe and is assembled with the anchor pipe through threads;
the self-expanding mechanisms are respectively distributed on two sides of the anchor pipe, each self-expanding mechanism comprises a first self-expanding piece and a second self-expanding piece, one end of each first self-expanding piece is hinged to one end of the anchor pipe, which is close to the anchor rod head, the other end of each first self-expanding piece is restrained with one end of each second self-expanding piece in a hinge mode, and the other end of each second self-expanding piece is abutted to one end of each limiting pipe, which corresponds to the anchor rod head;
the side wall of the outer tube is provided with two strip-shaped holes opposite to the self-expanding mechanisms, the self-expanding mechanisms are extruded towards one end of the anchor rod head in response to the limiting tube, and one end, connected with the first self-expanding piece and the second self-expanding piece, of the first self-expanding piece extends outwards or retracts back into the strip-shaped holes.
Preferably, a constraint mechanism is arranged between the two self-expanding mechanisms, limiting holes corresponding to the self-expanding mechanisms are formed in two sides of the anchor pipe, and the constraint mechanism is correspondingly connected with the two self-expanding mechanisms after traversing the two limiting holes.
Preferably, the restraining mechanism comprises a first restraining member and a second restraining member, one end of the first restraining member is hinged to the middle part of the first self-expanding member of one self-expanding mechanism, the other end of the first restraining member is slidably assembled with one end of the second restraining member, and the other end of the second restraining member is correspondingly hinged to the middle part of the second self-expanding member of the other self-expanding mechanism.
Preferably, the first restraint and the second restraint are both grooved pipes, and the second restraint extends into the first restraint.
Preferably, the second self-expanding piece is sleeved on the annular baffle outside the anchor pipe and is abutted against the limiting pipe, at least one convex strip extending along the axial direction of the outer pipe is arranged on the inner wall of the outer pipe, and a notch corresponding to the convex strip is arranged on the outer edge of the annular baffle.
Preferably, the first self-expanding piece is correspondingly hinged on a limiting ring, and the limiting ring is assembled on the anchor pipe in a threaded manner.
Preferably, one end of the first self-expanding piece corresponding to the second self-expanding piece is of a groove-shaped structure, and the end part of the second self-expanding piece is provided with a hinge shaft correspondingly hinged inside the first self-expanding piece.
Preferably, the end part of the first self-expanding piece is hinged with an extension plate, one end of the extension plate is correspondingly hinged with the end part of the first self-expanding piece, and the other end of the extension plate is limited in a rotation way in the two side directions of the first self-expanding piece;
a thrust spring is arranged between the two extension plates.
Preferably, a protruding part extending perpendicular to the extending plate is arranged at one end of the extending plate far away from the first self-expanding piece, and the protruding part is positioned in the strip-shaped hole after the self-expanding mechanism is retracted;
the thrust spring is located between the two protruding portions.
Preferably, one end of the anchor pipe, which is far away from the anchor rod head, extends out of the limiting pipe, and the anchor rod is provided with scale marks corresponding to the limiting pipe.
The beneficial effects are that: can open under the drive of gag lever post through from expanding the mechanism to can conflict the inner wall at the anchor eye, prevent that the stock from taking place the phenomenon that drops before the slip casting, with this slip casting effect of having guaranteed, avoid repeatedly installing the problem that the efficiency of construction is low that the stock caused.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. Wherein:
FIG. 1 is a schematic diagram of a grouting anchor according to an embodiment of the present invention;
fig. 2 is a schematic view showing an expanded state of the extension plate according to an embodiment of the present invention.
In the figure: 1. an anchor head; 2. an outer tube; 3. an anchor tube; 4. a first self-expanding member; 5. an extension plate; 6. a second self-expanding member; 7. an annular baffle; 8. a limiting tube; 9. a bar-shaped hole; 10. a limiting hole; 11. scale marks; 12. a first restraint; 13. a second constraint.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
In the description of the present invention, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. refer to the orientation or positional relationship based on that shown in the drawings, merely for convenience of description of the present invention and do not require that the present invention must be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. The terms "coupled" and "connected" as used herein are to be construed broadly and may be, for example, fixedly coupled or detachably coupled; either directly or indirectly through intermediate components, the specific meaning of the terms being understood by those of ordinary skill in the art as the case may be.
The invention will be described in detail below with reference to the drawings in connection with embodiments. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
As shown in fig. 1-2, a grouting anchor rod for a tunnel comprises an anchor rod head 1, an anchor pipe 3, a limiting pipe 8 and a self-expanding mechanism, wherein the anchor rod head 1 is of a conical structure, preferably a bottomless conical shell, a larger section of the anchor rod head 1 is correspondingly connected with an outer pipe 2, and the outer pipe 2 is only used for protecting the self-expanding mechanism when the anchor pipe 3 is inserted into an anchor hole, so that the length of the outer pipe 2 is matched with the length of the self-expanding mechanism in the axial direction, and the self-expanding mechanism can be completely shielded.
The anchor pipe 3 stretches into along the axial of outer tube 2 to correspond to be connected on stock head 1, specifically can fix through forms such as welding, threaded connection, spacing pipe 8 corresponds to cup joint at anchor pipe 3 outer wall, and with anchor pipe 3 screw assembly, spacing pipe 8 can rotate for anchor pipe 3, can reciprocate along the axial of anchor pipe 3 under the effect of screw through the rotation, two self-expanding mechanism distributes respectively in the both sides of anchor pipe 3, self-expanding mechanism includes first self-expanding piece 4 and second self-expanding piece 6, wherein, first self-expanding piece 4's one end articulates and is close to the one end of anchor pole head 1 at anchor pipe 3, the other end is restrained with the one end of second self-expanding piece 6 in the form of hinge, the other end of second self-expanding piece 6 is contradicted at spacing pipe 8 one end of corresponding anchor pole head 1, drive the non-articulated section of second self-expanding piece 6 through spacing pipe 8, when first self-expanding piece 4 and second self-expanding piece 6's non-articulated end are close to each other, first self-expanding piece 4 and second self-expanding piece 6 articulated end outwards stretch out the bar-shaped outer wall 9 in order to position the outside.
The two strip-shaped holes 9 are arranged on the side wall of the outer tube 2, the two strip-shaped holes 9 are opposite to the two self-expanding mechanisms, the self-expanding mechanisms are extruded towards one end of the anchor rod head 1 in response to the limiting tube 8, and one end, connected with the first self-expanding piece 4 and the second self-expanding piece 6, of each self-expanding piece extends outwards or retracts into the strip-shaped holes 9.
In another alternative embodiment, two sides of the anchor tube 3 are provided with limiting holes 10 corresponding to the self-expanding mechanisms, and the limiting holes 10 can guide out mortar in the anchor tube 3 during grouting, so that the mortar passes through the strip-shaped holes 9 and the limiting holes 10 and then enters the anchor holes.
In the embodiment, a plurality of slurry outlets are arranged at the side part of the anchor tube 3 and at the position corresponding to the strip-shaped hole 9 in the axial direction so as to ensure the rapid guiding-out of the mortar.
The limiting hole 10 is also a strip-shaped hole 9, and the width of the limiting hole 10 is matched with the self-expanding mechanism.
In another alternative embodiment, a constraint mechanism is arranged between the two self-expanding mechanisms, limiting holes 10 corresponding to the self-expanding mechanisms are arranged on two sides of the anchor tube 3, and the constraint mechanism is correspondingly connected with the two self-expanding mechanisms after traversing the two limiting holes 10. The restraint mechanism limits the self-expanding paths of the first self-expanding piece 4 and the second self-expanding piece 6, and limits the first self-expanding piece 4 and the second self-expanding piece 6 not to deviate when mutually rotating, so that the first self-expanding piece 4 and the second self-expanding piece 6 can smoothly pass through the strip-shaped hole 9.
In another embodiment, the restraining mechanism comprises a first restraining member 12 and a second restraining member 13, one end of the first restraining member 12 is hinged to the middle part of the first self-expanding member 4 of one self-expanding mechanism, the other end of the first restraining member is slidably assembled with one end of the second restraining member 13, and the other end of the second restraining member 13 is correspondingly hinged to the middle part of the second self-expanding member 6 of the other self-expanding mechanism, so that the two self-expanding mechanisms can be expanded in the same plane.
In another embodiment, the first constraining member 12 and the second constraining member 13 are both grooved pipes, specifically may be directional pipes or round pipes, and the width or diameter of the grooved pipes is not greater than the width of the limiting hole 10, and the second constraining member 13 extends into the first constraining member 12, so as to implement the path limitation on the first self-expanding member 4 or the second self-expanding member 6.
Further, a return spring is provided between the end of the second restraining element 13 and the first restraining element 12, the return spring providing a pulling force to keep the first self-expanding element 4 and the second self-expanding element 6 in a retracted trend, so that the first self-expanding element 4 and the second self-expanding element 6 are abutted against the anchor tube 3 when the stop tube 8 is not used for driving the second self-expanding element 6 (for example, during the process of inserting the anchor rod into the anchor hole).
In another alternative embodiment, the second self-expanding piece 6 is sleeved on the annular baffle 7 outside the anchor tube 3 to abut against the limiting tube 8, and the annular baffle 7 is slidably assembled on the outer wall of the anchor tube 3, so that when the second self-expanding piece 6 is driven, the rotation of the limiting tube 8 does not influence the second self-expanding piece 6, and the second self-expanding piece 6 is prevented from being stressed to deviate.
In order to further guarantee stability, be equipped with at least one along its axially extending sand grip at outer tube 2 inner wall, annular baffle 7 is equipped with the breach that corresponds the sand grip along the outer edge, carries out spacingly through the sand grip further, guarantees that annular baffle 7 can not take place to rotate.
In another alternative embodiment, the first self-expanding piece 4 is correspondingly hinged on the limiting ring, the limiting ring is assembled on the anchor pipe 3 through threads, the self-expanding mechanism is changed into a detachable structure, whether the self-expanding mechanism is installed or not can be selected according to actual conditions, and meanwhile the production difficulty of the anchor pipe 3 is reduced.
Furthermore, the limiting ring is adjustable, and the axial position of the self-expanding mechanism can be adjusted according to actual conditions.
In another alternative embodiment, the end of the outer tube 2 is provided with a tongue and groove, the tongue and groove is provided with external threads, the larger end socket of the anchor rod head 1 is correspondingly provided with internal threads, so that the outer tube 2 is assembled, and in the assembly process, the self-expanding mechanism is firstly installed, and then the outer tube 2 is installed.
In another alternative embodiment, one end of the first self-expanding element 4 corresponding to the second self-expanding element 6 is in a groove-shaped structure, the groove-shaped structure can provide a hinge position for the second self-expanding element 6, meanwhile, when the self-expanding mechanism retracts, the second self-expanding element 6 can be retracted into the groove-shaped structure, so that the first self-expanding element 4 and the second self-expanding element 6 are closer to the anchor tube 3, the end part of the second self-expanding element 6 is provided with a hinge shaft correspondingly hinged inside the first self-expanding element 4, and two ends of the hinge shaft penetrate through the first self-expanding element 4 and are riveted.
In another alternative embodiment, in order to enhance the clamping capability to the inner wall of the anchor hole, the end of the first self-expanding element 4 is hinged with an extension plate 5, and the extension plate 5 extends along the length direction of the first self-expanding element 4, and the length is selected according to the anchor hole, and is not greater than one half of the length of the first self-expanding element 4, preferably one third or one fourth of the length of the first self-expanding element 4.
The thickness of the extension plate 5 is not greater than the wall thickness of the groove-shaped part of the first self-expanding piece 4, one end of the extension plate 5 is correspondingly hinged to the end part of the first self-expanding piece 4, and the other end of the extension plate is limited in the two side directions of the first self-expanding piece 4 in a rotating mode, so that the extension plate 5 is further supported on the inner wall of an anchor hole after the self-expanding mechanism is opened, the acting point is improved, and the stability is guaranteed.
In another alternative embodiment, a thrust spring is provided between the two extension plates 5, by which a driving force is provided to form a circumferential support, ensuring stability.
In another alternative embodiment, the end of the extension plate 5 far away from the first self-expanding piece 4 is provided with a protruding part extending perpendicular to the extension plate 5, and the thrust spring is located between the two protruding parts, so that the second self-expanding piece 6 can be abducted, and the thrust spring is not interfered in the rotation process of the second self-expanding piece 6.
In order to better ensure that the self-expanding mechanism can successfully pass through the strip-shaped hole 9, in the retracted state of the self-expanding mechanism, the protruding part is positioned in the strip-shaped hole 9, and the protruding part can be partially protruding, or the width of the extension plate 5 is larger than that of the first self-expanding piece 4, so that the protruding part can be partially positioned in the strip-shaped hole 9.
In another alternative embodiment, one end of the anchor tube 3 far away from the anchor rod head 1 extends out of the limit tube 8, and the scale marks 11 corresponding to the limit tube 8 are arranged on the anchor tube 3, so that the opened state of the self-expanding mechanism can be determined according to the scale marks 11, and the inner wall of the anchor hole is clamped.
In this embodiment, the limiting tube 8 may be detached, or retained in the anchor hole along with grouting, preferably removed, before grouting, the limiting rod is rotated to withdraw the limiting rod from the anchor hole, and then grouting is performed by installing the grouting backing plate, at this time, the thrust spring pushes the extension plate 5 to open, so that the anchor tube 3 is kept clamping the inner wall of the anchor hole, and the limiting tube 8 may be recovered, thereby reducing production cost.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A grouting anchor for a tunnel, comprising:
the anchor rod head is of a conical structure, and an outer tube is correspondingly connected to the larger section of the anchor rod head;
the anchor pipe extends into the outer pipe along the axial direction and is correspondingly connected to the anchor rod head;
the limiting pipe is correspondingly sleeved on the outer wall of the anchor pipe and is assembled with the anchor pipe through threads;
the self-expanding mechanisms are respectively distributed on two sides of the anchor pipe, each self-expanding mechanism comprises a first self-expanding piece and a second self-expanding piece, one end of each first self-expanding piece is hinged to one end of the anchor pipe, which is close to the anchor rod head, the other end of each first self-expanding piece is restrained with one end of each second self-expanding piece in a hinge mode, and the other end of each second self-expanding piece is abutted to one end of each limiting pipe, which corresponds to the anchor rod head;
the side wall of the outer tube is provided with two strip-shaped holes opposite to the self-expanding mechanisms, the self-expanding mechanisms are extruded towards one end of the anchor rod head in response to the limiting tube, and one end, connected with the first self-expanding piece and the second self-expanding piece, of the first self-expanding piece extends outwards or retracts back into the strip-shaped holes.
2. A grouting anchor rod for a tunnel according to claim 1, wherein a constraint mechanism is arranged between the two self-expanding mechanisms, limiting holes corresponding to the self-expanding mechanisms are arranged on two sides of the anchor tube, and the constraint mechanism is correspondingly connected with the two self-expanding mechanisms after crossing the two limiting holes.
3. A grouting bolt for a tunnel according to claim 2, characterised in that the restraining means comprises a first restraining element and a second restraining element, one end of the first restraining element is hinged to the middle part of the first self-expanding element of one self-expanding mechanism, the other end is slidingly assembled with one end of the second restraining element, and the other end of the second restraining element is correspondingly hinged to the middle part of the second self-expanding element of the other self-expanding mechanism.
4. A grouting bolt for a tunnel according to claim 3, wherein the first and second restraints are slotted tubes, the second restraints extending into the interior of the first restraints.
5. The grouting anchor rod for the tunnel according to claim 1, wherein the second self-expanding piece is abutted against the limiting pipe through an annular baffle sleeved outside the anchor pipe, at least one convex strip extending along the axial direction of the outer pipe is arranged on the inner wall of the outer pipe, and a notch corresponding to the convex strip is arranged on the outer edge of the annular baffle.
6. A grouting bolt for a tunnel according to claim 1, wherein the first self-expanding member is correspondingly hinged to a stop collar which is threadedly mounted to the anchor tube.
7. The grouting anchor rod for the tunnel according to claim 1, wherein one end of the first self-expanding piece corresponding to the second self-expanding piece is of a groove-shaped structure, and a hinge shaft correspondingly hinged inside the first self-expanding piece is arranged at the end part of the second self-expanding piece.
8. The grouting anchor rod for the tunnel according to claim 7, wherein the end part of the first self-expanding piece is hinged with an extension plate, one end of the extension plate is correspondingly hinged to the end part of the first self-expanding piece, and the other end of the extension plate is limited in a rotation mode in the directions of two sides of the first self-expanding piece;
a thrust spring is arranged between the two extension plates.
9. A grouting bolt for a tunnel according to claim 8, wherein the end of the extension plate remote from the first self-expanding member is provided with a projection extending perpendicular to the extension plate, the projection being located within the bore after retraction of the self-expanding mechanism;
the thrust spring is located between the two protruding portions.
10. The grouting anchor rod for the tunnel according to claim 1, wherein one end of the anchor pipe far away from the anchor rod head extends out of the limit pipe, and graduation marks corresponding to the limit pipe are arranged on the anchor rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310713073.4A CN116446933B (en) | 2023-06-16 | 2023-06-16 | Grouting anchor rod for tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310713073.4A CN116446933B (en) | 2023-06-16 | 2023-06-16 | Grouting anchor rod for tunnel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116446933A true CN116446933A (en) | 2023-07-18 |
| CN116446933B CN116446933B (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310713073.4A Active CN116446933B (en) | 2023-06-16 | 2023-06-16 | Grouting anchor rod for tunnel |
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| Country | Link |
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| CN (1) | CN116446933B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116591147A (en) * | 2023-07-18 | 2023-08-15 | 中铁九局集团有限公司 | Steel pipe grouting device |
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| CN113494081A (en) * | 2020-09-30 | 2021-10-12 | 刘晓理 | Umbrella-shaped body expanding device for resisting collision and opening umbrella and expanding method thereof |
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- 2023-06-16 CN CN202310713073.4A patent/CN116446933B/en active Active
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|---|---|---|---|---|
| CN202139588U (en) * | 2011-06-18 | 2012-02-08 | 山东大学 | Novel self-broaching anchor rod |
| JP2015014180A (en) * | 2013-06-07 | 2015-01-22 | 株式会社中藏 | Underground anchor, and antiseismic reinforcement method of artificial slope using the same |
| CN213682090U (en) * | 2020-09-30 | 2021-07-13 | 刘晓理 | Pre-reaming post-planting type umbrella-shaped body expanding equipment |
| CN213897099U (en) * | 2020-09-30 | 2021-08-06 | 刘晓理 | Rotary spray anchor rod cable self-carrying umbrella-shaped expansion device |
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| CN116591147A (en) * | 2023-07-18 | 2023-08-15 | 中铁九局集团有限公司 | Steel pipe grouting device |
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| Publication number | Publication date |
|---|---|
| CN116446933B (en) | 2023-09-05 |
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